<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>js入门基础-变量</title>
  <link rel="stylesheet" href="../css/common.css">
</head>

<body>
  <div id="divDemo">
    <span>黑暗骑士你好</span>
  </div>

  <input type="text" id="txtDemo">

  <script src="js/h02.js"></script>
</body>

</html>